Mixer and primer.



B. B. ROBLEY. MIXER AND PRIMER. APPLICATION men AUG.27, x913.

Patente Aug. 24, 1915.

unrrnn earns ran FlFllQt BENJAMIN B. ROBLEY, OF BUFFALO, NEW YORK.

MIXER AND PRIMER.

Specification of Letters Patent.

Patented Aug. 24, 1915.

Application filed August 27, 1913. Serial No. 788,929.

to provide a combination device of the character referred to which is applicable to any internal combustion motor, the said device being used in connection with the intake pipe or intake manifold of the engine, primarily for the purpose of supplying fresh air to the mixture at a point between the carhureter and the combustion chamber or chambers, in the desired quantity, and also designed tojprovide for the introduction of gasolene ,;g ,er".other primary agent into the system t6" facilitate the starting of the en- With the above and other objects in View, the invention consists in the construction, combination and arrangement of parts, as will hereinafter be more fully described, illustrated and claimed.

In the accompanying drawings: Figure 1 is a side elevation showing the combined mixer and primer of this invention. Fig. 2 is a diametrical section through the same showing also a portion of an intake manifold.

The combined mixer and primer contemplated in this invention embodies a cup shaped hollow body 1 forming an air chamher 2 therein to which air is admitted through an inlet hole 3 shown as formed in one side of the chamber and extending through the wall of the body. At its lower end the body is reduced in size to form a. relatively small neck 4 in which is a tapering valve seat 5 the purpose of which will appear. The neck is then enlarged to form. a not face 6 to facilitate the screwing the device as a whole into and out of place in a manifold indicated at 7 or in the intake pipe between the carbureter and manifold or combustion chamber. For this purpose the device is provided with a threa end portion 8.

9 designates a threaded plug or cap which is screwed into the upper internally flopiec of this patent may be obtained for five cents each, by addressin Washington, D. 0."

ed tubular threaded end of the body- 1, said plug being movable to give access to the air chamber.

Threaded through the center of the plug or cap 9 is a needle valve stem 10 the inner end of which is pointed or tapergd as shown at 11 to closely fit the correspondingly tapered seat '5 above referred to. At its outer end the needle valve is provided with an angularly extending handle 12 provided for turning the threaded stem of the needle valve in the cap or plug 9.

13 designates a lock nut of the thumb or wing type so as to fix the adjustment of the needle valve in accordance with the demands of the engine. 7

Before starting the engine, the desired quantity of gasolene orother hydrocarbon is injected through the opening 3 and finds its way into the intake pipe or manifold as the case may be and from thence into the combustion chamber or chambers. After the engine is started, the needle valve is adjusted to admit the necessary quantity of air to provide for the best running speed and power of which the engine is susceptible. In actual practice, the device hereinabove described has been found 'to' add from twenty-five to forty per cent. to the power of the engine or to effect a corresponding re duction in the amount of gasolene or fuel oil used. An engine equipped with the device hereinabove described runs with greater freedom, at a higher speed and is far more efficient in the power developed.

What I claim is:

The combination with the intake manifold of an internal combustion engine, of a combined mixer and primer embodying a cup-shaped body forming an air and liquid chamber provided with an inlet hole in the side wall thereof and an outlet passage in the bottom thereof, a valve seat in the bottom of said chamber at the inner end of said outlet passage, a detachable cap at the opposite end of the chamber, a needle valve threaded through said cap, and locking means for said valve stem.

In testimony whereof I afiix my signature in presence of two witnesses.

' BENJAMIN B. ROBLEY.

Witnesses:

J. T. WALLIS,

PETER C. CRossE'rr.

g the Commissioner of Patents, 

